/*
 * Copyright 2016-2036 the original author or authors.
 *
 * COMMERCIAL USE OF THIS SOFTWARE WITHOUT WARRANTY IS NOT ALLOWED.
 * Use is subject to license terms! You can distribute a copy of this software
 * to others for free. This software is a non-profit and open-source project.
 * Any contribution to this project will make it better.
 * All rights reserved! Owned by Stephen Liu.
 *
 */
package com.github.raffle.behavior.observer;

/**
 * 
 * @author ste7en.liu@gmail.com
 * @since 1/27/2016
 */
public interface Observer {
	/**
	 * 回调函数，通知被观察者一些信息
	 * @param subject 主题
	 * @param arg 参数
	 */
	void callback(Subject subject, Object arg);
}
